{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://coldai.org/siontology/docs/agent/commerce/card-instrument.schema.json",
  "title": "dev.acp.tokenized.card instrument",
  "description": "An ACP payment instrument for the card handler: the token the merchant's PSP gave for a delegated card (a vault token, or a Stripe shared payment token), for one checkout.",
  "type": "object",
  "required": ["type", "credential"],
  "properties": {
    "id": {"type": "string"},
    "handler_id": {"type": "string"},
    "type": {"const": "card"},
    "credential": {
      "type": "object",
      "required": ["type", "token"],
      "properties": {
        "type": {"const": "spt"},
        "token": {"type": "string", "minLength": 1, "description": "The PSP's token: vt_... from an ACP PSP's delegate_payment, or spt_... from Stripe."}
      }
    }
  }
}